The author is a Forbes contributor. The opinions expressed are those of the writer.

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This is a hands-on review of Samsung's Galaxy S4, specifically for the power user written with the intent of helping those who may be looking at buying this new device. I am defining power users as being more concerned about productivity and a phone is a big part of their work day. My definition is different from the geek definition of someone who wants to use every single feature.

Here are eight features that 'power users' should find appealing:

The Big Screen: The big five inch screen is a productivity boost over using the much smaller screen of iPhone 5. Personally for me, the big screen reduces typos.

The display is Full HD Super AMOLED with a resolution of 920 x 1080 pixels and 441 pixels per inch. The display does not show pixel lag of some other smartphones. Indoors the display is crisp and bright. However, outdoors the display loses its brightness. This is not the phone for anyone planning to use it outdoors extensively.

Fast Processing: The processor is fast making it breeze through apps. Depending upon the markets you are in, Galaxy S4 has either a 1.9 GHz Quad-Core processor or a 1.6 GHz Octa-Core processor. These processors have enough horse power for even some of the most complex apps I tested.

Fast Connection: I have tested it only with , and at least visually I saw no difference between using AT&T network and a fast Wi-Fi in my office.

Air View: I especially found Air View helpful. All you have to do is simply hover over a thumbnail and see a preview of the picture.

Dual Apps: I especially found the ability to see two apps on the screen at the same time helpful. It is a big time saver to eliminate switching between two apps especially when editing documents.

Spare Battery: The phone has a large 2600 mAh. The battery is removable. I like the idea of carrying a spare battery like the good old days and not having to look for a power outlet especially when traveling.

External Memory: The ability to add up to 64 GB of external memory is a definite plus.

Gimmicky

The phone is very gimmicky. Further, anyone switching from iPhone will find that although the hardware is superior in Galaxy S4, the software is not refined.

In conclusion, the phone has great features for the power user who is willing to not use the gimmicky features of the phone, willing to live with less refined software, and use it mostly indoors.

needs to step up its game on the hardware side of iPhone or it is going to start losing high end users. Such a development will be very negative for Apple. My subscribers are still holding 10% of the original Apple position bought at $131. If strong indications develop that the next iPhone will not have hardware at par with Galaxy S4, it may lead to a change my current recommendation to continue to hold a small quantity of Apple for the long-term.